Abstract: An implantable medical device for implantation in the head of a patient. The implantable medical device has a plurality of interconnected modules one or more of which are covered by an overmold and one or more of which are partially covered by the overmold. The module(s) covered by the overmold may be implanted between the cranium and scalp, while the module(s) partially covered by the overmold may be placed at least partially into a recess in the cranium.

Abstract: In general, the invention is directed to techniques for implantation of a low-profile implantable medical device (IMD) in the body of a patient. In an exemplary embodiment, the low-profile IMD is implanted under the scalp. When the treatment or monitoring site is in or on the head of the patient, the low-profile IMD can be implanted under the scalp proximate to the treatment or monitoring site. In one embodiment, the invention is directed to a method that includes making an incision in the scalp of a head of a patient to create a scalp flap, exposing a skull beneath the scalp flap, creating a pocket between the scalp and the skull, and placing at least a portion of a low-profile IMD in the pocket. The low-profile IMD may include a plurality of modules, covered in part by a flexible overmold.

Abstract: A modular implantable medical device includes two or more interconnected modules and an overmold that at least partially encapsulates each of the housings of the modules. The overmold also includes a lead connection module for accepting an external lead. The lead connection module electrically and mechanically couples the lead to the components of the implantable medical device.

Abstract: A modular implantable medical device permits implantable medical devices to have a smaller profile in order to better fit into locations within the human body. A modular implantable medical device separates various functional components of the implantable medical device into a set of interconnected modules. This distributed architecture of a modular implantable medical device may permit the device footprint to be distributed over a larger area while making the profile smaller, and may permit the overall shape of the implantable medical device to better match the body location into which it is to be implanted. An overmold integrates the modules of a modular implantable medical device into a single structure. In some embodiments the overmold is flexible and provides a biocompatible interface from the component modules and the patient, while restraining potentially harmful intermodule motion.